SKF 31309 J2/QCL7C tapered roller bearing
- Brand
- SKF
- Category
- Bearings
- Subcategory
- Tapered roller bearings
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Other brands for this category
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Decoding SKF 31309 J2/QCL7C
- 313Series
- Tapered roller bearings, 313 series. Series differ in outside diameter and width even when the bore is the same.
- 09Bore
- Bore 45 mm (09 × 5).
- J2/QCL7CSuffix
- SKF suffix: identifies the variant, such as seals or shields, cage, internal clearance or other features.
31309 is the standard ISO basic designation, which sets the bearing type, series and bore.
Description
SKF 31309 J2/QCL7C measures 45 mm across the bore and 100 mm across the outside diameter; its total width is 27.25 mm (45 x 100 x 27.25 mm).
SKF 31309 J2/QCL7C belongs to tapered roller bearing, part of our Bearings range. Tell us how many you need by WhatsApp or email and we'll get back to you promptly with a quote for 31309 J2/QCL7C and any equivalents.
SKF tapered roller bearings are built to carry radial and axial loads at the same time. Their inclined raceways and tapered rollers spread force through the assembly, which suits machinery where both load directions appear. You will find them in industrial equipment, vehicles and transmissions. MR Industrial Accessories LLC supplies these bearings to customers across the United States, Canada, Mexico and South America. Send the part number you need by WhatsApp or email and our team will get back to you with a quote.
The reference for this series starts with a number that sets the series and bore, then adds letters and digits for execution variants. Look at 31309 J2/QCL7C, 31313 J2/QCL7C and 31316 J1/QCL7C: the leading digits define the main dimensions, while the J and QCL characters indicate design details. If a code is unclear, our team can help you read it.
These bearings appear in gearboxes, machine tools, mining equipment, material handling systems, pumps and compressors. Automotive wheel hubs and transmissions also use them, as does agricultural machinery. Because they take combined loads, they fit assemblies where radial and axial forces act together and where rigidity and precision matter.
Selection depends on load size and direction, rotational speed and the operating environment. Correct mounting calls for good alignment and suitable lubrication. Fit and internal clearance should match the application, and in two-bearing arrangements the layout and preload affect how the bearing performs. Our technical team can assist if you have questions.
When you look for an equivalent, keep in mind that other manufacturers use their own codes for tapered roller bearings. The main dimensions and load capacity are what let you identify a compatible replacement. If you have a code from another brand or an unmarked part, we can help you find the matching SKF reference. Interchangeability depends on respecting tolerances and internal design.
To request a quote for SKF tapered roller bearings, send the code or size you need by WhatsApp or email. MR Industrial Accessories LLC replies promptly and can suggest equivalents or help you choose.
Dimensions
45 x 100 x 27.25 mm (d x D x T): boundary dimensions for basic designation 31309, according to ISO 355.
- Bore
- 45mm
- Outside diameter (D)
- 100mm
- Total width (T)
- 27.25mm
Same size, other brands
Other brands' pages with basic designation 31309: 45 x 100 x 27.25 mm (d x D x T) per ISO 355.
What they share are the ISO 355 boundary dimensions, not the specs: seals or shields, internal clearance, cage and load rating may vary with brand and suffix. Every quote is by full part number.
Frequently asked questions
- SKF 31309 J2/QCL7C bearing: what are its dimensions?
- SKF 31309 J2/QCL7C measures 45 mm across the bore and 100 mm across the outside diameter; its total width is 27.25 mm (45 x 100 x 27.25 mm). Those are the boundary dimensions standardized in ISO 355 for basic designation 31309.
- What are SKF tapered roller bearings used for?
- They are common in gearboxes, machine tools, mining equipment, pumps, compressors, agricultural and automotive machinery. Since they support combined radial and axial loads, they suit assemblies where forces act in both directions.
- How do I pick the right tapered roller bearing?
- Check the radial and axial loads, speed, lubrication and mounting arrangement. The designation includes the series and bore number, which define the dimensions. For a precise selection, contact us with your application details.
- Can I replace another brand's bearing with an SKF one?
- Yes, if the main dimensions and load capacity match. These parameters establish equivalences between brands. If you have another brand's code, we help you identify the corresponding SKF reference. Write to us on WhatsApp.